EXECUTIVE SUMMARY
External marketing agencies and media buying retainers often hide opaque agency markups, unverified ad tech fees, and unproductive hours, inflating marketing overhead by 15% to 25%. Performance-based audits align spend with actual conversion ROI.
Media buying and agency retainers are structured to be difficult to verify. Ad tech fees, platform commissions, and creative hours are frequently presented as pass-through costs when they include undisclosed agency markup layered on top.
When retainers bill time and materials, unproductive hours — meetings, revisions, and internal coordination — are charged to the client without any linkage to outcomes. Over time, the retainer grows while the relationship to conversion ROI becomes impossible to measure.
Restructuring a retainer from time-and-materials to output-based pricing requires a clear audit of what is actually being paid for versus what is being delivered. The framework defines deliverables, links fees to results, and removes undisclosed markup.
Require line-item disclosure of media, ad tech, and platform fees at true cost, removing undisclosed agency markup from each layer.
Replace open-ended hours with defined deliverables tied to conversion, qualified leads, or other measurable marketing outcomes.
Price the defined deliverables across comparable agencies to confirm the retained structure is competitively aligned.
Structure the retainer so fees are reviewed and adjusted against conversion ROI each cycle rather than renewing automatically at an inflated rate.
An agency retainer and media buying audit removes hidden markup, converts open-ended hours to output-based pricing, and ties fees to conversion results. The first step is a confidential advisory conversation.